2010A&A...513L..13P


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.14CEST22:31:19

2010A&A...513L..13P - Astronomy and Astrophysics, volume 513, L13-13 (2010/4-1)

Evidence of enhanced formation episodes in the Galactic open cluster system.

PIATTI A.E.

Abstract (from CDS):

The exciting debate about the existence of signs of enhanced formation of Galactic open clusters (OCs) is revisited here on the basis of a revised age distribution. The data were taken from the recently updated 2009 version of the Dias et al.'s (Cat. B/ocl) 1787 OC catalogue. We found that the present OC's age distribution presents two primary excesses at t∼10-15Myr and 1.5Gyr, which are signs of enhanced formation episodes similar to those that occurred in other galaxies (e.g., M51, NGC1705). When restricting the OC sample to those located in the solar neighbourhood, with the aim of avoiding incompleteness effects, we also find that these clusters are engraved with clear signs of enhanced formation at both ages.

Abstract Copyright:

Journal keyword(s): galaxies: star clusters: general - open clusters and associations: general

Simbad objects: 12

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Number of rows : 12

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 M 32 IG 00 42 41.825 +40 51 54.61 9.51 9.03 8.08     ~ 2010 2
2 M 31 G 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 10905 1
3 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 9446 1
4 M 33 GiG 01 33 50.904 +30 39 35.79 6.17 6.27 5.72     ~ 5135 1
5 NAME Magellanic Clouds GrG 03 00 -71.0           ~ 5669 1
6 NGC 1705 SBG 04 54 13.500 -53 21 39.82 12.32 12.96 12.56 12.58 12.9 ~ 596 1
7 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 14832 1
8 NGC 4395 Sy2 12 25 48.8639154223 +33 32 48.694684028 10.84 10.54 10.11 9.98   ~ 994 1
9 M 51 GiP 13 29 52.698 +47 11 42.93   9.26 8.36 8.40   ~ 3782 4
10 NGC 5195 GiP 13 29 59.590 +47 15 58.06 10.76 10.45 9.55 9.31   ~ 696 3
11 NAME Gal Center reg 17 45 40.04 -29 00 28.1           ~ 11542 0
12 NAME Local Group GrG ~ ~           ~ 6973 0

    Equat.    Gal    SGal    Ecl

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2020.07.14-22:31:19

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